We have an ex2k10sp1 box that sits behind our spam system. We have always had verify recievers on (450 or 550). This would greatly reduce the amount of email we have to process because an email address that doesn't exist the filter simply drops it.
Since 2010 our filter gets dropped by the exchange server. It's a single server, small office, I thought maybe if I put the anti-spam agents on it and enabled recipient filtering that would solve my issue but it doesn't ... There probably is a workaround but for example this month we have processed 350k messages outbound from <> (i.e. ndrs) and such going out for invalid user. When we had the verify options on that number would be right in line with our outbound email counts. Ive been googling around about seeing if theres a way to re-enable that without success. Mail flow is perfect otherwise so I don't think it's a misconfig on my end... I looked at enabling my external smtp as a trusted internal connector and such thinking maybe I would get more smtp options but that didn't seem to do it either. Thanks Connection info from external spam filter: RCPT from mail-vx0-f175.google.com[209.85.220.175]: 450 4.1.1 <b...@email.com>: Recipient address rejected: unverified address: lost connection with my.ip.add.ress --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe exchangelist
